136383152721518 has 4 divisors (see below), whose sum is σ = 204574729082280. Its totient is φ = 68191576360758.

The previous prime is 136383152721499. The next prime is 136383152721539. The reversal of 136383152721518 is 815127251383631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34095788180378 + ... + 34095788180381.

It is an arithmetic number, because the mean of its divisors is an integer number (51143682270570).

Almost surely, 2^{136383152721518} is an apocalyptic number.

136383152721518 is a deficient number, since it is larger than the sum of its proper divisors (68191576360762).

136383152721518 is an equidigital number, since it uses as much as digits as its factorization.

136383152721518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68191576360761.

The product of its digits is 7257600, while the sum is 56.

The spelling of 136383152721518 in words is "one hundred thirty-six trillion, three hundred eighty-three billion, one hundred fifty-two million, seven hundred twenty-one thousand, five hundred eighteen".